CVE-2025-67445

TOTOLINK X5000R V9.1.0cu.2415_B20250515 contains a denial-of-service vulnerability in /cgi-bin/cstecgi.cgi. The CGI reads the CONTENT_LENGTH environment variable and allocates memory using malloc (CONTENT_LENGTH + 1) without sufficient bounds checking. When lighttpd s request size limit is not enforced, a crafted large POST request can cause memory exhaustion or a segmentation fault, leading to a crash of the management CGI and loss of availability of the web interface.

Score

CVSS 3.1 7.5 High

Status

Modified - cve@mitre.org

Published

2026-02-24

Last modified

2026-07-05

Weaknesses

CWE-400

Affected products

• X5000r Firmware (Totolink)

References

• https://github.com/DaRkSpOoOk/CVE-2025-67445